| 'use strict'; |
| |
| var GetIntrinsic = require('get-intrinsic'); |
| |
| var $DateUTC = GetIntrinsic('%Date.UTC%'); |
| |
| var $isFinite = require('../helpers/isFinite'); |
| |
| var DateFromTime = require('./DateFromTime'); |
| var Day = require('./Day'); |
| var floor = require('./floor'); |
| var modulo = require('./modulo'); |
| var MonthFromTime = require('./MonthFromTime'); |
| var ToIntegerOrInfinity = require('./ToIntegerOrInfinity'); |
| var YearFromTime = require('./YearFromTime'); |
| |
| // https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.12 |
| |
| module.exports = function MakeDay(year, month, date) { |
| if (!$isFinite(year) || !$isFinite(month) || !$isFinite(date)) { |
| return NaN; |
| } |
| var y = ToIntegerOrInfinity(year); |
| var m = ToIntegerOrInfinity(month); |
| var dt = ToIntegerOrInfinity(date); |
| var ym = y + floor(m / 12); |
| if (!$isFinite(ym)) { |
| return NaN; |
| } |
| var mn = modulo(m, 12); |
| var t = $DateUTC(ym, mn, 1); |
| if (YearFromTime(t) !== ym || MonthFromTime(t) !== mn || DateFromTime(t) !== 1) { |
| return NaN; |
| } |
| return Day(t) + dt - 1; |
| }; |